QuietScore › Bathroom & Utility Fans › Cyclone CBP50
Cyclone CBP50 noise level
The Cyclone CBP50 is quieter than the category median of 0.7 sones, and its 50 CFM rating makes it suitable for bathrooms up to roughly 50 sq ft.
Full specifications
| Brand | Cyclone |
|---|---|
| Model number | CBP50 |
| Model name | CBP |
| Category | Bathroom & Utility Fans |
| Sound level | 0.4 sones (≈27 dBA, approximate) |
| Airflow | 50 CFM |
| Efficiency | 4 CFM/W |
| Duct size | 4.00 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2021-12-31 |
| Markets | Canada |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Greenheck SP-A70 | 0.1 | 7 | 70 CFM | 5.1 CFM/W | specs |
| Broan XB80=XB00HwithXB80F | 0.1 | 7 | 80 CFM | 13.8 CFM/W | specs |
| Greenheck SP-A90L | 0.1 | 7 | 99 CFM | 6.1 CFM/W | specs |
| AUPU BF4-S10CL | 0.1 | 7 | 100 CFM | 9.5 CFM/W | specs |
| Greenheck SP-LP0810W | 0.1 | 7 | 100 CFM | 10 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| S&P PC50XP | 0.4 | 27 | 50 CFM | 4 CFM/W | specs |
| ACIQ ANP50 | 0.4 | 27 | 50 CFM | 4 CFM/W | specs |
| ACIQ AP50 | 0.4 | 27 | 50 CFM | 3.3 CFM/W | specs |
| Ortech ODE-5004 | 0.4 | 27 | 50 CFM | 3.4 CFM/W | specs |
| Air King AK50S | 0.5 | 30 | 50 CFM | 4.1 CFM/W | specs |
Frequently asked questions
How many sones is the Cyclone CBP50?
The Cyclone CBP50 is certified at 0.4 sones in ENERGY STAR lab testing, which is approximately 27 dBA. That is about as quiet as rustling leaves; most people cannot hear it over ambient room noise.
Is the Cyclone CBP50 quiet?
At 0.4 sones, the Cyclone CBP50 is quieter than 66% of the 811 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the Cyclone CBP50?
It moves 50 CFM, which is adequate for a bathroom of roughly 50 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 4 CFM per watt.
Data provenance: Sound levels are certified lab measurements (sones) reported in the U.S. EPA ENERGY STAR certified products dataset — not manufacturer marketing claims. Source: ENERGY STAR Certified Ventilating Fans (US EPA), last fetched 2026-06-13. The dBA figure is an approximate conversion from sones — see our methodology.